no code implementations • 27 Sep 2024 • Manuele Leonelli
Bayesian networks (BNs) are widely used for modeling complex systems with uncertainty, yet repositories of pre-built BNs remain limited.
no code implementations • 5 Jul 2024 • Manuele Leonelli, Jim Q. Smith, Sophia K. Wright
Bayesian networks are one of the most widely used classes of probabilistic models for risk management and decision support because of their interpretability and flexibility in including heterogeneous pieces of information.
no code implementations • 9 Jun 2024 • Rafael Ballester-Ripoll, Manuele Leonelli
Last, we apply the method of Sobol to the resulting network to obtain $n$ global sensitivity indices.
no code implementations • 28 May 2024 • Manuele Leonelli, Gherardo Varando
Generative classifiers based on Bayesian networks are often used because of their interpretability and competitive accuracy.
no code implementations • 28 May 2024 • Jack Storror Carter, Manuele Leonelli, Eva Riccomagno, Gherardo Varando
Staged trees are probabilistic graphical models capable of representing any class of non-symmetric independence via a coloring of its vertices.
no code implementations • 1 Jun 2023 • Fabio Crimaldi, Manuele Leonelli
This study explores the concept of creativity and artificial intelligence (AI) and their recent integration.
no code implementations • 1 Feb 2023 • Rafael Ballester-Ripoll, Manuele Leonelli
Sensitivity analysis measures the influence of a Bayesian network's parameters on a quantity of interest defined by the network, such as the probability of a variable taking a specific value.
no code implementations • 2 Jan 2023 • Manuele Leonelli, Gherardo Varando
Bayesian networks are widely used to learn and reason about the dependence structure of discrete variables.
1 code implementation • 17 Jun 2022 • Rafael Ballester-Ripoll, Manuele Leonelli
Sensitivity analysis measures the influence of a Bayesian network's parameters on a quantity of interest defined by the network, such as the probability of a variable taking a specific value.
no code implementations • 14 Jun 2022 • Manuele Leonelli, Gherardo Varando
Several structural learning algorithms for staged tree models, an asymmetric extension of Bayesian networks, have been defined.
no code implementations • 8 Mar 2022 • Manuele Leonelli, Gherardo Varando
Bayesian networks faithfully represent the symmetric conditional independences existing between the components of a random vector.
no code implementations • 7 Oct 2021 • Rafael Ballester-Ripoll, Manuele Leonelli
We show how to apply Sobol's method of global sensitivity analysis to measure the influence exerted by a set of nodes' evidence on a quantity of interest expressed by a Bayesian network.
no code implementations • 4 Aug 2021 • Gherardo Varando, Federico Carli, Manuele Leonelli
Bayesian networks are a widely-used class of probabilistic graphical models capable of representing symmetric conditional independence between variables of interest using the topology of the underlying graph.
no code implementations • 25 Jul 2021 • Manuele Leonelli, Ramsiya Ramanathan, Rachel L. Wilkerson
Bayesian networks are a class of models that are widely used for risk assessment of complex operational systems.
no code implementations • 8 Jun 2021 • Manuele Leonelli, Gherardo Varando
Causal discovery algorithms aim at untangling complex causal relationships from data.
no code implementations • 26 Dec 2020 • Federico Carli, Manuele Leonelli, Gherardo Varando
Generative models for classification use the joint probability distribution of the class variable and the features to construct a decision rule.
no code implementations • 29 Oct 2020 • Christiane Görgen, Manuele Leonelli, Orlando Marigliano
Staged tree models are a discrete generalization of Bayesian networks.
Statistics Theory Methodology Statistics Theory
1 code implementation • 14 Apr 2020 • Federico Carli, Manuele Leonelli, Eva Riccomagno, Gherardo Varando
stagedtrees is an R package which includes several algorithms for learning the structure of staged trees and chain event graphs from data.
no code implementations • 18 Dec 2018 • Manuele Leonelli, Eva Riccomagno
Sensitivity analysis in probabilistic discrete graphical models is usually conducted by varying one probability value at a time and observing how this affects output probabilities of interest.
no code implementations • 27 Sep 2018 • Christiane Goergen, Manuele Leonelli
However, for Gaussian graphical models, such variations usually make the original graph an incoherent representation of the model's conditional independence structure.
no code implementations • 2 Aug 2016 • Manuele Leonelli, Jim Q. Smith
We then proceed with the construction of a directed expected utility network to support decision makers in the domain of household food security.
no code implementations • 28 Jul 2016 • Manuele Leonelli, Eva Riccomagno, Jim Q. Smith
For problems where all random variables and decision spaces are finite and discrete, here we develop a symbolic way to calculate the expected utilities of influence diagrams that does not require a full numerical representation.
no code implementations • 7 Dec 2015 • Manuele Leonelli, Christiane Görgen, Jim Q. Smith
Sensitivity methods for the analysis of the outputs of discrete Bayesian networks have been extensively studied and implemented in different software packages.